CN101499997B - Apparatus for multi-path low speed service multiplexing and demultiplexing, and method therefor - Google Patents
Apparatus for multi-path low speed service multiplexing and demultiplexing, and method therefor Download PDFInfo
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Abstract
The invention discloses a multipath low-speed service multiplexing and demultiplexing device and a method thereof, which relates to the technical field of communication transmission networks. The multipath low-speed service multiplexing device disclosed by the invention comprises a GFP multiplexing and adaptation unit, a plurality of client service entrances and an OTN mapping unit which are connected with the GFP multiplexing and adaptation unit, wherein, the client service entrance is used for supporting switching in and rate adaptation of various low-speed services at different rates, and can carry out coded conversion according to the type of the switch-in service; the GFP multiplexing and adaptation unit is used for distinguishing data input by each service channel; in the process of GFP packaging, service channel marking information is added; and data of a certain service channel output by a selection line based on the state of a buffer is gathered into a channel of high-speed GFP code stream data after adaptation; and the OTN mapping unit is used for adapting the multiplexed GFP code stream data into an OTN frame structure to be transmitted. The technical scheme of the invention improves the utilization rate of the bandwidth.
Description
Technical field
The transport network technical field that the present invention relates to communicate by letter relates in particular to a kind of multi-path low speed service integration and Deplexing apparatus and method thereof.
Background technology
Continuous increase along with data service in the communication transfer network, increasing data service needs direct access transmission network, especially directly accessing DWDM (dense wave division multipurpose, Dense Wave lengthDivision Multiplexing) network transmits.These data services are of a great variety, and data frame structure is different, and data rate ranges is between 100Mbps～10Gbps.For example, gigabit Ethernet business (GE, Gigabit Ethernet), line speed 1.25Gbps, frame structure satisfies IEEE (U.S.'s electronics and electrical engineers learn, Institute for Electrical and Electronics Engineers) 802.3 standard-requireds; And fiber channel services (FC, Fibre Channel) speed can be 1.0625Gbps, 2.125Gbps, 4.25Gbps etc., frame structure satisfies the relevant criterion such as ANSI (U.S. information system national standard, American National Standard for Information System) X3.230y1994 and X3.297y1997.
at present, the multi-path low speed business, especially the process transmitted on optical transfer network of data service, first the low speed business to be carried out general frame forming process (GFP, General Framing Procedure) package, and then multichannel data is mapped to synchronous digital transmission system (SDH, Synchronous DigitalHierarchy) in virtual container, distinguish client's service channel with the virtual container of SDH, although realized like this multiplexing and demultiplexing of the digital signal of different transmission rates, but the expense of SDH can take massive band width, and multiple connection/minute termination process is extremely complicated.
Another method is after the low speed business is carried out the GFP package, to map directly in the time slot of OTN payload, and the business of different passages is distinguished with multiplexing by the time slot of OTN.This mode is similar to the virtual container of SDH, realizes relative complex, and can not dynamically utilize bandwidth chahnel.
Summary of the invention
Technical problem to be solved by this invention is a kind of multi-path low speed service integration and Deplexing apparatus and method thereof to be provided, thereby to improve bandwidth availability ratio.
In order to address the above problem, the invention discloses a kind of multi-path low speed service integration device, this device comprises the multiplexing and adaptation unit of a general frame forming GFP, and coupled a plurality of client's ingresses for service and an optical transfer network OTN map unit respectively, wherein:
Described client's ingress for service is used for supporting access and the rate adapted of various different rates low speed business, and can carries out code conversion according to the type of access service;
Multiplexing and the adaptation unit of described GFP is used for the data of each service channel input of identification, in GFP package process, add the service channel identification information, and according to buffer status, select circuit to export the data of certain road service channel, converging after adaptive is one tunnel at a high speed GFP bit stream data;
Described OTN map unit is fitted to the GFP bit stream data after multiplexing in the OTN frame structure and transmits.
Further, in above-mentioned multiplexer, multiplexing and the adaptation unit of described GFP, a plurality of buffers that comprise connection corresponding to multichannel client ingress for service, a channel selecting unit that is connected with described a plurality of buffers, a GFP packet element that is connected with this channel selecting unit, a Rate Adapter Unit that is connected with described GFP packet element, wherein:
Described channel selecting unit, according to each buffer status, business datum and this service channel identification information selecting successively to send certain passage arrive described GFP packet element;
Described GFP packet element carries out unified GFP package operation to the data of each service channel and each service channel identification information.
Further, in above-mentioned multiplexer, multiplexing and the adaptation unit of described GFP, a plurality of GFP packet elements that comprise connection corresponding to multichannel client ingress for service, a buffer that is connected with each GFP packet element is connected, a channel selecting unit that is connected with described a plurality of buffers, a Rate Adapter Unit that is connected with described channel selecting unit, wherein:
The GFP bag data of certain passage according to described each buffer status, are selected to send successively to Rate Adapter Unit in described channel selecting unit;
The GFP packet element carries out respectively independently sending in the buffer that is attached thereto after the operation of GFP package to the data of each service channel and each service channel identification information.
Multiplexing and the adaptation unit of above-mentioned GFP in carrying out GFP package process, is encapsulated in described service channel identification information in the GFP prolate-headed gap marker of bag territory.
The invention also discloses a kind of multi-path low speed business Deplexing apparatus, this device comprises a general frame forming GFP demultiplexing unit, and coupled a plurality of client's business outlets and the optical transfer network OTN solution map unit of difference, wherein:
Described client's business outlet is used for the data after identification GFP unpacks, and is converted to the rear output of corresponding type of service coding;
Described GFP demultiplexing unit according to the service channel identification information in GFP bag, is selected business datum is sent into the buffer of corresponding service channel, and carries out GFP and unpack;
Described OTN separates map unit, is used for that the data that receive are carried out OTN and separates frame, recovers the GFP bit stream data and gives the GFP demultiplexing unit.
Further, in above-mentioned Deplexing apparatus, described GFP demultiplexing unit, a plurality of buffers that comprise connection corresponding to the multi-channel service channel outlet, one channel assignment unit is connected with described a plurality of buffers, and a GFP unwrapper unit is connected with described channel assignment unit, wherein:
Described channel assignment unit according to the service channel identification information, outputs to each business datum in the buffer of corresponding service channel;
Described GFP unwrapper unit is used for unified GFP and separates package operation, and the gap marker information in the payload data after unpacking and GFP bag is given described channel assignment unit together.
Further, in above-mentioned Deplexing apparatus, described GFP demultiplexing unit, a plurality of GFP unwrapper unit that comprise connection corresponding to the multi-channel service channel outlet, each GFP unwrapper unit is connected with a buffer, and a channel assignment unit is connected with described a plurality of buffers, wherein:
Described channel assignment unit after obtaining the service channel identification information in each GFP bag, according to described each buffer status, outputs to each GFP bag data on corresponding service channel;
Described GFP unwrapper unit, GFP separates package operation to be used for carrying out independently to each service channel, and the gap marker information in the payload data after unpacking and GFP bag is given the buffer that is attached thereto together.
The invention also discloses a kind of method of multi-path low speed service integration, at first the method identifies the data of each service channel input, in general frame forming GFP package process, add the service channel identification information, and according to buffer status, select circuit to export the data of certain road service channel, after finishing service channel selecting and GFP package, adaptive the converging of through-rate is the GFP bit stream data of one tunnel high speed, then is fitted in optical transfer network OTN frame structure and transmits.
Further, above-mentioned multiplexing method, at first the data of described each service channel input are carried out buffer memory by buffer, then according to each buffer status, the business datum of certain service channel of selection transmission and this service channel identification information are to a GFP packet element successively, this GFP packet element carries out unified GFP package operation to the data of each service channel and each service channel identification information, sends to afterwards Rate Adapter Unit.
Further, above-mentioned multiplexing method, at first the independently operation of GFP package and buffer memory are carried out respectively in data and each service channel identification information of each service channel, then wrap the state of data buffer storage according to the GFP of described each service channel, select successively to send the GFP bag data of certain passage to Rate Adapter Unit.
In above-mentioned GFP package process, described service channel identification information is encapsulated in the prolate-headed gap marker of GFP bag territory.
The invention also discloses a kind of method of multi-path low speed business demultiplexing, at first the method is carried out optical transfer network OTN with the data that receive and is separated frame, after recovering the GFP bit stream data, according to the service channel identification information in the GFP bag, the buffer of corresponding service channel is sent into business datum in selection, and the method also needs to complete GFP before the outgoing traffic channel data and unpacks.
Further, above-mentioned Deplexing method to the GFP bit stream data of described recovery, at first carries out unified GFP and separates package operation, then according to the buffer status of service channel identification information and each service channel, each business datum is outputed on corresponding service channel.
Further, above-mentioned Deplexing method, from the GFP bit stream data of described recovery, at first obtain the service channel identification information in each GFP bag, then according to the buffer status of each service channel, each GFP bag data are outputed on corresponding service channel, then carry out respectively independently GFP solution package operation.
Technical solution of the present invention has been saved in prior art, multi-path low speed rate business is at optical transfer network (OTN, Optical Transport Network) time, must first be mapped to synchronous digital transmission system (SDH, Synchronous Digital Hierarchy) virtual container carries out the process that passage is distinguished, thereby has improved bandwidth availability ratio.
Description of drawings
Fig. 1 is multi-path low speed service integration/Deplexing apparatus theory diagram in technical solution of the present invention;
Fig. 2 (a) is multi-path low speed service integration apparatus structure schematic diagram in embodiment 1;
Fig. 2 (b) is multi-path low speed business Deplexing apparatus structural representation in embodiment 1;
Fig. 3 is channel selecting cell processing flow chart in Fig. 2 (a) shown device;
Fig. 4 is channel assignment unit process chart in Fig. 2 (b) shown device;
Fig. 5 (a) is multi-path low speed service integration apparatus structure schematic diagram in embodiment 2;
Fig. 5 (b) is multi-path low speed business Deplexing apparatus structural representation in embodiment 2;
Fig. 6 is channel selecting cell processing flow chart in Fig. 5 (a) shown device.
Embodiment
Main design of the present invention is, multi-path low speed rate business is distinguished if carry out passage when the GFP package when access OTN network, just can remove the SDH layer from, at this moment, only the bit stream data that multiple client's traffic format is unified into the GFP packet format need to be mapped directly to transmit in the OTN frame and get final product.
Technical solution of the present invention is by as above conceiving multi-path low speed service integration and the Deplexing apparatus principle that proposes, as shown in Figure 1, multichannel client's service access unit all and adaptation unit (perhaps GFP Multiplexing Unit) multiplexing by GFP becomes frame unit to be connected with OTN, wherein
Client's service access unit comprises client's ingress for service unit and client's business outlet port unit, wherein, client's ingress for service unit, be used for supporting access and the rate adapted of various different rates low speed business, and can carry out code conversion according to the type of access service, be convenient to GFP package process; Client's business outlet port unit is used for the data after identification GFP unpacks, and is converted to the rear output of corresponding type of service coding.Wherein client's service access unit can support all based on the business of 8B/10B coding, for example, GE, FC etc., the 10B code conversion that circuit is received is the mode of 8B code+K indicating bit, also can access the business of some non-8B/10B codings, for example, FE (100 m ethernet) business, at this moment, client's service access unit needs first pattern to be converted to the mode of the 8B code that the GFP package can identify+K indicating bit.Equally, need to complete opposite operation in the outlet of client's business.
Multiplexing and the adaptation unit of GFP, it is a component units of multiplexer, the data that are used for each service access unit input of identification, namely identify the data of each service channel input, in GFP package process, add the service channel identification information, and according to buffer status, select circuit to export the business datum of certain paths, converging after adaptive is one tunnel at a high speed GFP bit stream data.
The GFP demultiplexing unit is a component units of Deplexing apparatus, according to the service channel identification information in GFP bag, selects business datum is sent into the buffer of corresponding service channel, and carries out GFP and unpack.
OTN mapping and solution map unit comprise the OTN map unit, are component units of multiplexer, are used for that the GFP bit stream data after multiplexing is fitted to the OTN frame structure and transmit;
OTN separates map unit, is a component units of Deplexing apparatus, is used for that the data that receive are carried out OTN and separates frame, recovers the GFP bit stream data and gives the GFP demultiplexing unit.
Although above with the description of putting together of multiplexing and Deplexing apparatus, multiplexer and Deplexing apparatus also can individualisms.
The below engages the drawings and the specific embodiments technical solution of the present invention is described in further detail.
Embodiment 1:
Multi-path low speed client business is used the multiplexer of same GFP package process, as shown in Fig. 2 (a), multiplexing and the adaptation unit of GFP wherein, a plurality of buffers that further comprise connection corresponding to multichannel client ingress for service, a channel selecting unit, GFP packet element and a Rate Adapter Unit; Multichannel client's ingress for service is separately by after buffer, is connected with the channel selecting unit, and this channel selecting unit passes through the GFP packet element and is connected with Rate Adapter Unit, and this Rate Adapter Unit is connected with the OTN map unit, and wherein each Elementary Function is as follows:
Client's ingress for service is used for supporting access and the rate adapted of various different rates low speed business, and can carries out code conversion according to the type of access service;
Buffer, be used for each service channel data are carried out suitable buffer memory, and export himself suitable status indication information to GFP multiplexing and adaptation unit, wherein the status indication information of buffer comprises whether the current business data of storing in this buffer enough consist of one or more gfp frame;
The channel selecting unit, according to each service channel buffer status, the business datum of certain passage of selection transmission and this service channel identification information are to the GFP packet element successively;
The GFP packet element carries out unified GFP package operation to the data of each service channel and each service channel identification information;
Rate Adapter Unit, will be lower than the high speed GFP bit stream data of 2.48832Gbps or 9.95328Gbps, according to prior art, namely by adding GFP IDLE frame or other GFP control frame, make GFP bit stream data speed satisfy the standard speed of OTN payload, be convenient to the mapping of OTN framing;
The OTN map unit, according to prior art, the GFP bit stream data after multiplexing is fitted in the OTN frame structure and transmits, in the present embodiment, the OTN map unit adopts with the process that the GFP bit stream data is fitted to the OTN frame structure standard mode that meets G.707, namely uses GFP IDLE frame with the speed of GFP bit stream data rate adapted to the requirement of OTN frame structure.
One road high-speed data signal uses same GFP to separate the Deplexing apparatus of packet procedures, as shown in Fig. 2 (b), GFP demultiplexing unit wherein further comprises a plurality of buffers of connection corresponding to the multi-channel service channel outlet, a channel assignment unit and a GFP unwrapper unit; OTN separates map unit and is connected with channel assignment unit by a GFP unwrapper unit, a plurality of buffers of this channel assignment unit tap, and each buffer is connected with client's business outlet, and wherein each Elementary Function is as follows:
The outlet of client's business is used for the data after identification GFP unpacks, and is converted to the rear output of corresponding type of service coding;
Buffer is used for each service channel data are carried out suitable buffer memory, and exports himself suitable status indication information to channel assignment unit;
Channel assignment unit according to the service channel identification information, outputs to each business datum in the buffer of corresponding service channel;
The GFP unwrapper unit is used for completing the GFP bag synchronous, and GFP control frame and management frames Check processing, correlated performance statistics and GFP such as unpack at the operation, and the gap marker information that the payload data after unpacking and GFP unwrap in pin is given channel assignment unit together;
OTN separates map unit, according to prior art, the data that receive is carried out OTN and separates frame, recovers the GFP bit stream data and gives channel assignment unit.
Above-mentioned multiplexer carries out having adopted same GFP package process after buffer memory to client's business datum of access, detailed process is, multichannel client's business datum is by after buffer buffer memory separately, select and the GFP package through service channel again, then being converged by Rate Adapter Unit is the GFP bit stream data of one tunnel high speed, and data rate is lower than the standard speed (2.48832Gbps or 9.95328Gbps) of OTN payload.
Wherein, the handling process of channel selecting unit comprises the following steps as shown in Figure 3:
Step 301: initialization, select certain service channel for to work as prepass, for example, passage 1;
Step 302: whether the business datum in the buffer of detection current business passage can consist of one or more gfp frame, if, enter step 303, otherwise, step 304 entered;
Step 303: give the GFP packet element with current business channel data and service channel identification information, carry out the GFP package;
In this step, in GFP package process, the service channel identification information can be put into the specific overhead area of GFP bag, for example: the prolate-headed way of GFP identifies (CID, Channel ID) territory.
Step 304: select next service channel for working as prepass, if there is no next service channel, select the 1st service channel conduct to work as prepass, and return to step 302.
In above-mentioned Deplexing apparatus, one road high-speed data signal is separated map unit through OTN and is recovered the GFP bit stream data, and give the GFP unwrapper unit and carry out GFP and unpack, business datum and service channel identification information thereof after this GFP unwrapper unit will unpack send to the service channel allocation units, and these service channel allocation units output to each business datum in corresponding service channel according to the service channel identification information.
Wherein, the handling process of channel assignment unit comprises the following steps as shown in Figure 4:
Step 401: receive GFP and unpack data;
Step 402: read in GFP bag whether contain the service channel identification information, if enter step 403, otherwise abandon end operation after this gfp frame;
Step 403: selecting corresponding service channel according to the service channel identification information that reads is the data outlets;
Step 404: the data after GFP is unpacked output to end operation after the buffer of service channel of current selection.
In this step, in the process of data output, can suitably insert or delete according to the state of buffer the filling information of some traffic aideds according to prior art in buffer, to realize rate adapted, guarantee that buffer can not overflow.
Embodiment 2:
A kind of multi-path low speed client service integration and Deplexing apparatus, independently GFP package or solution packet procedures have been adopted respectively for each service channel, be depicted as multi-path low speed client service integration device as Fig. 5 (a), in this device, multiplexing and the adaptation unit of GFP, a plurality of buffers that further comprise connection corresponding to multichannel client ingress for service, a plurality of GFP packet elements, channel selecting unit and a Rate Adapter Unit; Multichannel client's ingress for service is separately through after a GFP packet element, be connected with a buffer, a plurality of buffers are connected with the channel selecting unit respectively, Rate Adapter Unit is connected with channel selecting unit and OTN map unit respectively, wherein, each Elementary Function is basic identical with embodiment 1 multiplexer, and difference is:
The GFP bag data of certain passage according to each service channel buffer status, are selected to send successively to Rate Adapter Unit in the channel selecting unit.
Be depicted as Fig. 5 (b), a kind of multi-path low speed client business Deplexing apparatus, in this device, the GFP demultiplexing unit further comprises a plurality of GFP unwrapper unit of connection corresponding to the multi-channel service channel outlet, a plurality of buffers and a channel assignment unit; OTN separates map unit and is connected with channel assignment unit, a plurality of buffers of this channel assignment unit tap, each buffer is connected with the GFP unwrapper unit, and each GFP unwrapper unit is connected with client's business outlet, wherein the function of each unit is substantially the same manner as Example 1, and difference is:
Channel assignment unit after obtaining the service channel identification information in each GFP bag, according to the buffer status of each service channel, outputs to each GFP bag data on corresponding service channel.
Above-mentioned multiplexer carries out respectively independently GFP package operation for each service channel, detailed process is, at first each passage client business is carried out the GFP package, and buffer memory, and then be one tunnel at a high speed GFP bit stream data by the channel selecting unit with each passage GFP bag convergence, and data rate is lower than the standard speed of OTN payload.
Wherein the GFP packet element of each passage is when carrying out package, all the identification information of this passage is filled into the overhead area of GFP bag, like this, what deposit in the buffer of each passage is through the GFP package, and with the low speed GFP bit stream data of gap marker information.
The handling process of channel selecting unit and embodiment 1 are basically identical, but the passage handover operation carries out at the boundary of GFP bag, as shown in Figure 6, specifically comprise the following steps:
Step 601: initialization, select certain passage for to work as prepass, for example, passage 1;
Step 602: detect whether data have at least one complete gfp frame data in the buffer of prepass, if so, enter step 603, otherwise enter step 606;
Step 603: whether the GFP bit stream data of detection in the prepass buffer memory if so, enters step 605, otherwise enters step 604 in the gfp frame original position;
Step 604: from reading the fragment gfp frame when the buffer memory of prepass, and abandoning, is all complete gfp frame thereby make the high speed GFP bit stream data after multiplexing on circuit, then returns to step 602;
Step 605: read complete gfp frame data from work as the prepass buffer memory, and send to Rate Adapter Unit;
Step 606: select next passage for to work as prepass, if be last passage, select the 1st passage, then return to step 602.
Not data after GFP unpacks and in above-mentioned Deplexing apparatus, channel assignment unit receives, but complete GFP bag data, at this moment, it is synchronous that channel assignment unit is first completed the GFP bag, and read gap marker information in GFP bag, carry out independently after the buffer that data send to respectively corresponding service channel that GFP separates package operation thereby according to gap marker information, GFP is wrapped.
Wherein, in channel assignment unit and embodiment 1, the handling process of channel assignment unit is basic identical, specifically is divided into following steps:
Step 1: read successively in each GFP bag whether contain the service channel identification information, if, enter step 2, otherwise end operation;
Step 2: selecting corresponding service channel according to the service channel identification information that reads is the outlets of GFP bag data;
Step 3: after GFP being wrapped the buffer of the service channel that data output to current selection, carried out by the GFP unwrapper unit and separate package operation, process ends.
Can find out from above-described embodiment, technical solution of the present invention has been saved in prior art, and multi-path low speed rate business must first be mapped to the SDH virtual container and carry out the process that passage is distinguished in the OTN network, thereby has improved bandwidth availability ratio.
Certainly; the present invention also can have other various embodiments; in the situation that do not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art are when making according to the present invention various corresponding changes and distortion, and these change and be out of shape the protection range that all should belong to the appended claim of the present invention accordingly.
Claims (11)
1. a multi-path low speed service integration device, is characterized in that,
This device comprises the multiplexing and adaptation unit of a general frame forming GFP, and coupled a plurality of client's ingresses for service and an optical transfer network OTN map unit respectively, wherein:
Described client's ingress for service is used for supporting access and the rate adapted of various different rates low speed business, and can carries out code conversion according to the type of access service;
Multiplexing and the adaptation unit of described GFP is used for the data of each service channel input of identification, in GFP package process, add the service channel identification information, and according to buffer status, select to send the data of certain road service channel, converging after adaptive is one tunnel at a high speed GFP bit stream data;
Described OTN map unit is fitted to the GFP bit stream data after multiplexing in the OTN frame structure and transmits;
Wherein, multiplexing and the adaptation unit of described GFP, a plurality of buffers that comprise connection corresponding to multichannel client ingress for service, a channel selecting unit that is connected with described a plurality of buffers, a GFP packet element that is connected with this channel selecting unit, a Rate Adapter Unit that is connected with described GFP packet element, wherein:
Described channel selecting unit, according to each buffer status, business datum and this service channel identification information selecting successively to send certain passage arrive described GFP packet element;
Described GFP packet element carries out unified GFP package operation to the data of each service channel and each service channel identification information;
Described buffer is used for each service channel data are carried out suitable buffer memory, and export himself suitable status indication information to GFP multiplexing and adaptation unit, wherein the status indication information of buffer comprises whether the current business data of storing in this buffer enough consist of one or more gfp frame.
2. a multi-path low speed service integration device, is characterized in that,
This device comprises the multiplexing and adaptation unit of a general frame forming GFP, and coupled a plurality of client's ingresses for service and an optical transfer network OTN map unit respectively, wherein:
Described client's ingress for service is used for supporting access and the rate adapted of various different rates low speed business, and can carries out code conversion according to the type of access service;
Multiplexing and the adaptation unit of described GFP is used for the data of each service channel input of identification, in GFP package process, add the service channel identification information, and according to buffer status, select to send the data of certain road service channel, converging after adaptive is one tunnel at a high speed GFP bit stream data;
Described OTN map unit is fitted to the GFP bit stream data after multiplexing in the OTN frame structure and transmits;
Wherein, multiplexing and the adaptation unit of described GFP, a plurality of GFP packet elements that comprise connection corresponding to multichannel client ingress for service, a buffer that is connected with each GFP packet element, a channel selecting unit that is connected with described a plurality of buffers, a Rate Adapter Unit that is connected with described channel selecting unit, wherein:
The GFP bag data of certain passage according to described each buffer status, are selected to send successively to Rate Adapter Unit in described channel selecting unit;
The GFP packet element carries out respectively independently sending in the buffer that is attached thereto after the operation of GFP package to the data of each service channel and each service channel identification information;
Described buffer is used for each service channel data are carried out suitable buffer memory, and export himself suitable status indication information to GFP multiplexing and adaptation unit, wherein the status indication information of buffer comprises whether the current business data of storing in this buffer enough consist of one or more gfp frame.
3. multiplexer as claimed in claim 1 or 2, is characterized in that,
Multiplexing and the adaptation unit of described GFP in carrying out GFP package process, is encapsulated in described service channel identification information in the GFP prolate-headed gap marker of bag territory.
4. a multi-path low speed business Deplexing apparatus, is characterized in that,
This device comprises a general frame forming GFP demultiplexing unit, and coupled a plurality of client's business outlets and the optical transfer network OTN solution map unit of difference, wherein:
Described client's business outlet is used for the data after identification GFP unpacks, and is converted to the rear output of corresponding type of service coding;
Described GFP demultiplexing unit according to the service channel identification information in GFP bag, is selected business datum is sent into the buffer of corresponding service channel, and carries out GFP and unpack;
Described OTN separates map unit, is used for that the data that receive are carried out OTN and separates frame, recovers the GFP bit stream data and gives the GFP demultiplexing unit;
Described GFP demultiplexing unit comprises a plurality of buffers of connection corresponding to the multi-channel service channel outlet, and a channel assignment unit is connected with described a plurality of buffers, and a GFP unwrapper unit is connected with described channel assignment unit, wherein:
Described channel assignment unit according to the service channel identification information, outputs to each business datum in the buffer of corresponding service channel;
Described GFP unwrapper unit is used for unified GFP and separates package operation, and the gap marker information in the payload data after unpacking and GFP bag is given described channel assignment unit together.
5. a multi-path low speed business Deplexing apparatus, is characterized in that,
This device comprises a general frame forming GFP demultiplexing unit, and coupled a plurality of client's business outlets and the optical transfer network OTN solution map unit of difference, wherein:
Described client's business outlet is used for the data after identification GFP unpacks, and is converted to the rear output of corresponding type of service coding;
Described GFP demultiplexing unit according to the service channel identification information in GFP bag, is selected business datum is sent into the buffer of corresponding service channel, and carries out GFP and unpack;
Described OTN separates map unit, is used for that the data that receive are carried out OTN and separates frame, recovers the GFP bit stream data and gives the GFP demultiplexing unit;
Described GFP demultiplexing unit comprises a plurality of GFP unwrapper unit of connection corresponding to the multi-channel service channel outlet, and each GFP unwrapper unit is connected with a buffer, and a channel assignment unit is connected with described a plurality of buffers, wherein:
Described channel assignment unit after obtaining the service channel identification information in each GFP bag, according to described each buffer status, outputs to each GFP bag data on corresponding service channel;
Described GFP unwrapper unit, GFP separates package operation to be used for carrying out independently to each service channel, and the gap marker information in the payload data after unpacking and GFP bag is given the buffer that is attached thereto together.
6. the method for a multi-path low speed service integration, is characterized in that,
At first the method identifies the data of each service channel input, in general frame forming GFP package process, add the service channel identification information, and according to buffer status, select to send the data of certain road service channel, after finishing service channel selecting and GFP package, adaptive the converging of through-rate is the GFP bit stream data of one tunnel high speed, then is fitted in optical transfer network OTN frame structure and transmits;
Wherein, described buffer is used for the GFP bag data of each service channel data or each service channel are carried out suitable buffer memory, and export himself suitable status indication information, wherein the status indication information of buffer comprises whether the current business data of storing in this buffer enough consist of one or more gfp frame;
The method also comprises carries out buffer memory to the data of described each service channel input by buffer, then according to each buffer status, the business datum of certain service channel of selection transmission and this service channel identification information are to a GFP packet element successively, this GFP packet element, data and each service channel identification information to each service channel carry out unified GFP package operation, send to afterwards Rate Adapter Unit.
7. the method for a multi-path low speed service integration, is characterized in that,
At first the method identifies the data of each service channel input, in general frame forming GFP package process, add the service channel identification information, and according to buffer status, select to send the data of certain road service channel, after finishing service channel selecting and GFP package, adaptive the converging of through-rate is the GFP bit stream data of one tunnel high speed, then is fitted in optical transfer network OTN frame structure and transmits;
Wherein, described buffer is used for the GFP bag data of each service channel data or each service channel are carried out suitable buffer memory, and export himself suitable status indication information, wherein the status indication information of buffer comprises whether the current business data of storing in this buffer enough consist of one or more gfp frame;
The method also comprises carries out respectively the independently operation of GFP package and buffer memory to the data of each service channel and each service channel identification information, then wrap the state of data buffer storage according to the GFP of described each service channel, select successively to send the GFP bag data of certain passage to Rate Adapter Unit.
8. multiplexing method as described in claim 6 or 7, is characterized in that,
In described GFP package process, described service channel identification information is encapsulated in the prolate-headed gap marker of GFP bag territory.
9. the method for a multi-path low speed business demultiplexing, is characterized in that,
At first the method is carried out optical transfer network OTN with the data that receive and is separated frame, after recovering the GFP bit stream data, according to the service channel identification information in the GFP bag, select business datum is sent into the buffer of corresponding service channel, the method also needs to complete GFP before the outgoing traffic channel data and unpacks;
Wherein, described buffer is used for each service channel data are carried out suitable buffer memory.
10. Deplexing method as claimed in claim 9, is characterized in that,
At first the GFP bit stream data of the method to described recovery carry out unified GFP and separate package operation, then according to the buffer status of service channel identification information and each service channel, each business datum outputed on corresponding service channel.
11. Deplexing method as claimed in claim 9 is characterized in that,
The method is from the GFP bit stream data of described recovery, at first obtain the service channel identification information in each GFP bag, then according to the buffer status of each service channel, each GFP bag data are outputed on corresponding service channel, then carry out respectively independently GFP solution package operation.
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| CN103502985B (en) * | 2013-04-12 | 2017-01-25 | 华为技术有限公司 | Data processing method, device and system |
| CN105406937B (en) * | 2014-09-12 | 2020-03-03 | 中兴通讯股份有限公司 | Frame fixing method and device |
| CN107925635A (en) | 2015-09-24 | 2018-04-17 | 华为技术有限公司 | A kind of method for sending and receiving optical transfer network OTN signals, OTN equipment and system |
| EP3592086A4 (en) * | 2017-04-27 | 2020-03-25 | Beijing Xiaomi Mobile Software Co., Ltd. | Method and apparatus for service multiplexing and transmission, and computer-readable storage medium |
| CN107517170A (en) * | 2017-07-31 | 2017-12-26 | 广东中云海科技有限公司 | Redundant system and splicing system for polymorphic type, multi tate baseband signal |
| WO2019153253A1 (en) * | 2018-02-09 | 2019-08-15 | 华为技术有限公司 | Service data processing method and device in optical transport network |
| CN112788442B (en) * | 2019-11-08 | 2022-09-27 | 烽火通信科技股份有限公司 | Method and system for bearing low-speed service in OTN (optical transport network) |
| CN113810279B (en) * | 2020-06-15 | 2023-06-27 | 北京灵汐科技有限公司 | Data packet transmission method and system |
| CN114475713B (en) * | 2022-01-24 | 2023-07-25 | 电子科技大学 | Multi-source data fusion tapping system and method for high-speed magnetic levitation train-ground communication system |
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